A pregnant 33-year-old woman at 35 weeks’ gestation presented with redness on both palms without pain and pruritis. She was otherwise asymptomatic. The skin changes had first appeared during the second trimester of pregnancy. Skin examination was notable for mottled, blanching erythema across the palms and fingers of both hands. What is the diagnosis?
患者女，33岁，孕35周，双手掌发红，无疼痛、瘙痒。患者在其他方面无症状。皮肤改变最早出现在妊娠中期。值得注意的皮肤检查是双手手掌和手指出现斑驳的白色红斑。诊断是什么?
A. Atopic eruption of pregnancy 妊娠期特应性皮疹
B. Intrahepatic cholestasis of pregnancy 妊娠肝内胆汁淤积症
C. Palmar erythema of pregnancy 妊娠手掌红斑
D. Polymorphic eruption of pregnancy 妊娠多形性皮疹
E. Tinea manuum 手藓
答案解析：
正确答案是妊娠期手掌红斑，这是妊娠期皮肤的一种生理性血管性改变。无特异性治疗指征，通常在分娩后2周内消退，但完全消退可能需要长达2个月。
正确答案：C
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